Out of curiosity, I decided to build a list of DC Comics' female superheroes and this is the list so far. Feel free to point out anyone I missed:
1930s - Red Tornado, Rose Psychic
1940s - Black Canary, Gimmick Girl, Hawkgirl, Liberty Belle, Miss X, Superwoman, Wonder Woman
1950s - Aquagirl, Batwoman, Carol Ferris, Lady Blackhawk, Saturn Girl, Supergirl, Wonder Girl
1960s - Dawn Allen, Arrowette, Batgirl, Dolphin, Dream Girl, Dumb Bunny, Elasti-Girl, Element Girl, Gas Girl, Hawkwoman, Insect Queen, Katma Tui, Life Lass, Lightning Lass, Madame .44, Marvel Maid, Mera, Night Girl, Phantom Girl, Princess Projectra, Shadow Lass, Shrinking Violet, Strong Girl, Triplicate Girl, White Witch, Wind Lass, Zatanna
1970s - Big Barda, Black Orchid, Bumblebee, Celsius, Dawnstar, Duela Dent, Fire, Godiva, Icemaiden, Isis, Jayna, Jezebelle, Laurel Kent, Little Mermaid, Madame Xanadu, Omen, Owlwoman, Power Girl, Rima, Silver Sorceress, Thorn, Valentina Vostok, Helena Wayne
1980s - Amethyst, Helena Bertinelli, Black Thorn, Chameleon Girl, Beth Chapel, Betty Clawman, Comet Queen, Crazy Jane, Crimson Fox, Doctor Light, Fury, Gloss, Gypsy, Halo, Harbinger, Ice, Jade, Jet, Lodestone, Katana, Carrie Kelley, Kole, Kono, Lady Liberty, Lady Quark, Looker, Maxima, Onyx, Raven, Danette Reilly, Holly Robinson, Arisia Rrab, Shakira, Silk Spectre, Dorothy Spinner, Starfire, Terra, Valda, Vixen, Wildcat
1990s - Anima, Argent, Artemis, Boodikka, Stephanie Brown, Laurel Gand, Beryl Hutchinson, Inferno, Natasha Irons, Kinetix, Kismet, Lightning, Maya, Mirage, Monstress, Renee Montoya, Lori Morning, Neon, Nightstar, Pantha, Prysm, Jesse Quick, Redwing, Rocket, Secret, Sensor, Sparx, Stargirl, Thunder, Tomorrow Woman, Patricia Trayce, XS
2000s - Black Alice, Bombshell, Sasha Bordeaux, Bulleteer, Grace Choi, Cyclone, Manitou Dawn, Empress, Faith, Fever, Misfit, Miss Martian, Soranik Natu, Jenna Raleigh, Sapphire, Sonia Sato, Sayd, Skyrocket, Thara Ak-Var, Traci 13, Warlock's Daughter, Wildstar, Witchfire
2010s - Aquawoman, Bluebird, Crush, Jessica Cruz, Deep Dweller, Djinn, Emiko Queen, Janet Fals, Jinny Hex, Naomi McDuffie, Mother Panic, Serene, The Silencer, Solstice, Strix, Teen Lantern, Timber, Linnya Wazzo, Ya'Wara
Acquired use:
Charlton Comics - Nightshade
Fawcett Comics - Bulletgirl, Freckles Marvel, Mary Marvel
Quality Comics - Doll Girl, Lady Luck, Miss America, Miss Fear, Phantom Lady, Wildfire